Storage container

Abstract

The utility model discloses a storage container which comprises a supporting part and a storage part, the storage part is configured to move to an inclined state relative to the supporting part, the storage part is provided with a storage space and an opening communicated with the storage space, the inner wall of the storage space is provided with a blocking part close to the opening, and the edge of the blocking part is provided with a protruding part protruding towards the side close to the opening; and the cover plate covers the opening. According to the storage container, the blocking part close to the opening is arranged on the inner wall of the storage space of the storage part, and the protruding part protruding towards the side close to the opening is arranged on the edge of the blocking part, so that when the cover plate and the storage part are closed, the probability that particulate matter enters a gap between the cover plate and the blocking part is reduced; and the user experience of the storage container can be improved.

Description

Technical Field

[0001] The utility model relates to the field of daily necessities, and in particular to a storage container. Background Art

[0002] Storage containers are commonly used items in daily life for storing particulate matters such as rice, flour, and beans. In related technologies, some storage containers are inclined, and the storage containers are provided with openings. To prevent the stored particulate matters from spilling when the storage containers are inclined, baffles are usually provided at the openings. However, when the cover plates of the storage containers are covered on the openings, the particulate matters are likely to enter the gaps between the cover plates and the baffles. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, an object of the utility model is to provide a storage container, which can effectively solve the problem that particulate matters are likely to enter the gaps between the cover plates and the baffles.

[0004] A storage container according to an embodiment of the utility model includes: a support part; a storage part configured to be movable relative to the support part to an inclined state, the storage part having a storage space and an opening communicating with the storage space, a blocking part is provided on the inner wall of the storage space near the opening, and a convex part protruding toward the side close to the opening is provided at the edge of the blocking part; a cover plate covering the opening.

[0005] For the storage container according to the embodiment of the utility model, by providing a blocking part near the opening on the inner wall of the storage space of the storage part, and a convex part protruding toward the side close to the opening is provided at the edge of the blocking part, the probability of particulate matters entering the gap between the cover plate and the blocking part can be reduced when the cover plate and the storage part are closed, which is beneficial to improving the user experience of the storage container.

[0006] In some embodiments of the utility model, the convex part includes a main body part and edge parts provided at both ends of the main body part, and in the direction away from the main body part, the edge parts are smoothly transitioned to be flush with the blocking part.

[0007] In some embodiments of the utility model, the blocking part and the convex part are integrally formed.

[0008] In some embodiments of the utility model, the convex part is made of an elastic material.

[0009] In some embodiments of the utility model, a retaining edge part is provided on the inner wall of the storage space near the opening, the retaining edge part extends along the edge of the opening and is connected to both ends of the blocking part, and a convex part protruding toward the side close to the opening is provided at the edge of the retaining edge part.

[0010] In some embodiments of the present utility model, a curved slide rail is provided between the support portion and the storage portion, and the storage portion moves along the curved slide rail so that the storage portion rotates relative to the support portion, such that the storage portion is in a vertical state or an inclined state.

[0011] In some embodiments of the present utility model, the support portion is provided with a spherical surface groove, the storage portion has a spherical bottom, the spherical bottom is arranged in the spherical surface groove, the curved slide rail is arranged in one of the spherical surface groove and the spherical bottom, and a connecting portion is arranged in the other of the spherical surface groove and the spherical bottom, and the connecting portion is slidably arranged in the curved slide rail, so that the storage portion can move relative to the support portion to the inclined state.

[0012] In some embodiments of the present utility model, the connecting portion is arranged on one side of the support portion or the storage portion close to the protruding portion, so that the storage portion moves along the direction close to the protruding portion to the inclined state.

[0013] In some embodiments of the present utility model, a rolling member is arranged in one of the spherical surface groove and the spherical bottom, and the rolling member contacts the other of the spherical surface groove and the spherical bottom.

[0014] In some embodiments of the present utility model, at least the outermost part of the rolling member is an elastic member.

[0015] In some embodiments of the present utility model, the protruding portion is arranged in a fitting manner with the cover plate.

[0016] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0018] Figure 1 is an exploded view of a storage container in some embodiments of the present utility model Figure 1 ;

[0019] Figure 2 is a schematic diagram of the storage portion in an inclined state in some embodiments of the present utility model;

[0020] Figure 3 is a cross-sectional view of a storage container in some embodiments of the present utility model Figure 1 ;

[0021] Figure 4Explosion view of the storage container in some embodiments of the present utility model Figure 2 ;

[0022] Figure 5 Explosion view of the storage container in some embodiments of the present utility model Figure 3 ;

[0023] Figure 6 Cross-sectional view of the storage container in some embodiments of the present utility model Figure 2 ;

[0024] Figure 7 is Figure 6 Partial enlarged schematic view at VII of

[0025] Reference numerals:

[0026] 100, storage container; 10, support part; 10a, spherical groove; 101, base; 102, upper cover; 20, storage part; 201, storage space; 202, opening; 203, blocking part; 204, protruding part; 2041, main body part; 2042, edge part; 205, edge blocking part; 206, spherical bottom; 30, cover plate; 301, sealing member; 40, curved slide rail; 50, connecting part; 501, sliding column; 502, limiting hook; 60, rolling member. Detailed description of the embodiments

[0027] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0029] In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features, used to distinguish and describe features, without order or importance.

[0030] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] Reference is made below Figures 1 - 7 , to describe the storage container 100 according to an embodiment of the present utility model.

[0033] As Figure 1 shown, the storage container 100 according to an embodiment of the present utility model includes: a support portion 10, a storage portion 20, and a cover plate 30. The storage portion 20 is configured to be movable relative to the support portion 10 to an inclined state. The storage portion 20 has a storage space 201 and an opening 202 communicating with the storage space 201. A blocking portion 203 is provided on the inner wall of the storage space 201 near the opening 202, and a protruding portion 204 protruding toward the side close to the opening 202 is provided at the edge of the blocking portion 203. The cover plate 30 covers the opening 202.

[0034] In the above technical solution, the support portion 10 may refer to a component for supporting the storage portion 20, and may be, but is not limited to, structures such as a base, a bracket, etc. The support portion 10 can be placed horizontally on a platform (such as a kitchen countertop), or can be fixed on a wall surface (such as a kitchen wall surface), and no specific limitation is made here.

[0035] The storage portion 20 may refer to a container capable of storing particulate matter. Among them, the storage space 201 can provide a storage space for particulate matter, and the opening 202 is used to enable particulate matter to enter and exit the storage space 201. The storage portion 20 can be, but is not limited to, a cylindrical shape, a prismatic shape, a shape with a cylindrical upper part and a spherical lower part, etc., and no specific limitation is made here. Among them, the above-mentioned "particulate matter" can include, but is not limited to, rice, flour, beans, etc., and no specific limitation is made here.

[0036] In the above solution, the storage portion 20 can move relative to the support portion 10, and can move relative to the support portion 10 to an inclined state (see Figure 2 ). The initial state of the storage portion 20 relative to the support portion 10 can be vertical or inclined. For example, the storage portion 20 can move from a vertical state to an inclined state relative to the support portion 10. The storage portion 20 can also move from a larger inclination angle to a smaller inclination angle relative to the support portion 10; the storage portion 20 can also move from a smaller inclination angle to a larger inclination angle relative to the support portion 10. The above-mentioned "inclination angle" can refer to the angle of the storage portion 20 relative to the horizontal plane or the vertical plane.

[0037] There is no limitation on the moving manner of the accommodating part 20 relative to the supporting part 10. The movement between the accommodating part 20 and the supporting part 10 can be achieved through a mechanical structure, which can include but is not limited to ball joint connection, pivot connection, etc. The accommodating part 20 and the supporting part 10 can also be connected through a non-mechanical structure. For example, the accommodating part 20 is arranged in a magnetic levitation manner relative to the supporting part 10, and the movement of the accommodating part 20 relative to the supporting part 10 can be controlled by electromagnetic force.

[0038] It can be understood that since the accommodating part 20 can move relative to the supporting part 10 to an inclined state, the blocking part 203 can be located at a position closer to the lower part of the opening 202 when the accommodating part 20 is in the inclined state, so as to block the particulate matter from falling out of the accommodating space 201. Among them, the blocking part 203 can refer to a component that can play a blocking role, which can be but is not limited to a baffle, a strip arranged in the same direction (refer to comb teeth), etc., and there is no specific limitation here.

[0039] When the cover plate 30 and the accommodating part 20 are closed, the cover plate 30 and the blocking part 203 generally cannot be completely adhered. There is easily a gap between the cover plate 30 and the blocking part 203. By providing a protruding part 204 protruding towards the side close to the opening 202 at the edge of the blocking part 203, when the cover plate 30 and the accommodating part 20 are closed, the protruding part 204 can effectively block the particulate matter from entering the gap between the cover plate 30 and the blocking part 203, ensuring the cleanliness on the blocking part 203.

[0040] For the storage container 100 according to the embodiment of the present invention, by providing a blocking part 203 close to the opening 202 on the inner wall of the accommodating space 201 of the accommodating part 20, and providing a protruding part 204 protruding towards the side close to the opening 202 at the edge of the blocking part 203, the probability of particulate matter entering the gap between the cover plate 30 and the blocking part 203 can be reduced when the cover plate 30 and the accommodating part 20 are closed, which is beneficial to improving the user experience of the storage container 100.

[0041] In some embodiments of the present invention, as Figure 3 、 Figure 4 and Figure 6 shown, the protruding part 204 includes a main body part 2041 and an edge part 2042. The edge part 2042 is arranged at both ends of the main body part 2041, and in the direction away from the main body part 2041, the edge part 2042 smoothly transitions to be flush with the blocking part 203.

[0042] It can be understood that the height of the edge portion 2042 gradually decreases relative to the blocking portion 203. Since a sealing member 301 (such as a sealing ring, etc.) is generally provided at the circumferential edge of the cover plate 30 when the cover plate 30 is closed on the storage portion 20, which is used to play a sealing role between the cover plate 30 and the opening 202, the protruding height of the edge portion 2042 gradually decreases in the direction away from the main body portion 2041. In this way, the interference effect of the protruding portion 204 on the sealing member 301 can be avoided, and the sealing performance between the cover plate 30 and the opening 202 can be ensured.

[0043] Secondly, the edge portion 2042 smoothly transitions to be flush with the blocking portion 203. Thereby, the probability of stress concentration occurring between the edge portion 2042, the blocking portion 203, and the main body portion 2041 can be reduced, the fatigue strength of the overall blocking portion 203 and the protruding portion 204 can be improved, and it is beneficial to extend the service life. Secondly, due to the smooth transition between the edge portion 2042 and the blocking portion 203, and the smooth transition between the edge portion 2042 and the main body portion 2041, sharp edges between the edge portion 2042 and the blocking portion 203 can also be avoided, which can reduce the situation of users being cut by their hands during use. At the same time, it is also beneficial to improve the overall aesthetics and craftsmanship of the storage container 100 and enhance the user experience.

[0044] In some embodiments of the present utility model, the blocking portion 203 and the protruding portion 204 are integrally formed parts. Thus, the overall structure formed by the blocking portion 203 and the protruding portion 204 is more stable, and the overall stiffness and strength are higher. The probability of deformation and fracture under the action of the cover plate 30 is relatively low, and the service life can be extended. Secondly, adopting the above-mentioned integrally formed design can also improve the integration degree of components, reduce the assembly steps, and is beneficial to improving production efficiency.

[0045] In some embodiments of the present utility model, the protruding portion 204 is made of an elastic material. The elastic material has elastic ability, so that the protruding portion 204 can elastically deform when subjected to an external force and can recover after the external force disappears. Thus, it has high adaptability and self-recovery ability, and can reduce the probability of damage to the protruding portion 204 when using the storage container 100. When the cover plate 30 closes the opening 202, the protruding portion 204 can elastically abut against the cover plate 30, playing a sealing role between the cover plate 30 and the blocking portion 203, and further reducing the probability of particulate matter entering between the cover plate 30 and the blocking portion 203.

[0046] In some embodiments of the present utility model, as Figures 1 to 4 shown, a retaining edge portion 205 is provided on the inner wall of the storage space 201 near the opening 202. The retaining edge portion 205 extends along the edge of the opening 202 and is connected to both ends of the blocking portion 203. A protruding portion 204 is provided on the edge of the retaining edge portion 205 and protrudes toward the side near the opening 202.

[0047] During the use of the storage container 100, the storage part 20 can move in multiple directions relative to the support part 10 to an inclined state. For example, the storage part 20 can move forward relative to the support part 10 to an inclined state (see Figure 2 ), which is convenient for the user to take the particulate matter in the storage part 20. In this state, the blocking part 203 is located on the front wall side of the storage space 201. The storage part 20 can also move backward, left or right relative to the support part 10 to an inclined state. At this time, the edge blocking part 205 can also play a certain blocking role, reducing the probability of the particulate matter falling outside the storage space 201. Moreover, when the cover plate 30 is closed on the storage part 20, it can prevent the particulate matter from entering between the cover plate 30 and the open end 202, thus avoiding the problem that the cover plates 30 are not completely closed. The convex part 204 can block the particulate matter from entering the gap between the cover plate 30 and the edge blocking part 205.

[0048] It can be seen that in the above technical solution, through the action of the blocking part 203 and the edge blocking part 205, the probability of the particulate matter falling out of the storage space 201 when the storage part 20 is in an inclined state in multiple directions can be reduced. On this basis, by providing the convex part 204 on both the blocking part 203 and the edge blocking part 205, the convex part 204 can effectively prevent the particulate matter from falling into the gap between the cover plate 30 and the blocking part 203, and the gap between the cover plate 30 and the edge blocking part 205.

[0049] In some embodiments of the present invention, as Figure 4 shown, a curved slide rail 40 is provided between the support part 10 and the storage part 20. The storage part 20 moves along the curved slide rail 40 to rotate the storage part 20 relative to the support part 10, so that the storage part 20 is in a vertical state or an inclined state.

[0050] The curved slide rail 40 can play a role in guiding the rotation of the storage part 20 relative to the support part 10, enabling the storage part 20 to move along a set track and reducing the probability of the storage part 20 deviating in the moving direction relative to the support part 10. Among them, the curved slide rail 40 can be provided on the support part 10 and cooperate with the storage part 20; the curved slide rail 40 can also be provided on the storage part 20 and cooperate with the support part 10. In the above technical solution, the support part 10 and the storage part 20 can achieve relative movement through the curved slide rail 40, thereby improving the reliability and stability of the movement of the storage part 20 relative to the support part 10.

[0051] Exemplarily, the storage part 20 can rotate relative to the support part 10 in one direction, and the curved slide rail 40 extends along the rotation direction of the storage part 20. As Figure 2 shown, the storage part 20 can rotate relative to the support part 10 in the front-rear direction, and the curved slide rail 40 extends in the front-rear direction. Optionally, the curved slide rail 40 can be provided as one or more.

[0052] Exemplarily, the storage part 20 can rotate relative to the support part 10 in multiple directions, and a curved slide rail 40 is arranged in each direction in which the storage part 20 rotates relative to the support part 10. For example, the storage part 20 can rotate relative to the support part 10 in the front-back direction and the left-right direction, and thus the curved slide rails 40 in the two directions can form a "cross" shape or a "well" shape.

[0053] In some embodiments of the present invention, such as Figure 2 , Figure 3 , Figure 4 and Figure 6 as shown, the support part 10 is provided with a spherical surface groove 10a, the storage part 20 has a spherical bottom 206, the spherical bottom 206 is arranged in the spherical surface groove 10a, the curved slide rail 40 is arranged in one of the spherical surface groove 10a and the spherical bottom 206, and a connecting part 50 is arranged in the other of the spherical surface groove 10a and the spherical bottom 206. The connecting part 50 is slidably arranged in the curved slide rail 40 so that the storage part 20 can be moved relative to the support part 10 to an inclined state.

[0054] It can be understood that in this technical solution, not only can the storage part 20 and the support part 10 be moved along a set track through the curved slide rail 40, but also the spherical surface groove 10a and the spherical bottom 206 cooperate with each other to further provide a guiding and supporting effect on the movement of the storage part 20. Thus, the movement of the storage part 20 can be more stable, and it can be more stably installed on the support part 10.

[0055] The connecting part 50 can refer to a component that can cooperate with the curved slide rail 40 so that the support part 10 or the storage part 20 can be connected to the curved slide rail 40 and move. The connecting part 50 can be, but is not limited to, components such as a slider and a sliding column. Among them, the curved slide rail 40 can be arranged on the spherical surface groove 10a, and the connecting part 50 is arranged on the spherical bottom 206; the curved slide rail 40 can also be arranged on the spherical bottom 206, and the connecting part 50 is arranged on the spherical surface groove 10a.

[0056] In some embodiments, such as Figure 5 and Figure 7 as shown, the support part 10 includes a base 101 and an upper cover 102. The upper cover 102 is arranged on the base 101, the spherical surface groove 10a is arranged on the upper cover 102, and the bottom of the curved slide rail 40 penetrates through the upper cover 102; the connecting part 50 can include a sliding column 501 and a limiting hook 502. The sliding column 501 is slidably arranged on the curved slide rail 40, the limiting hook 502 is penetrated through the curved slide rail 40, and the hook part of the limiting hook 502 abuts against the bottom wall of the upper cover 102.

[0057] In the above technical solution, the sliding column 501 cooperates with the curved slide rail 40 to enable the storage part 20 to rotate relative to the support part 10. The limiting hook 502 abuts against the bottom wall of the upper cover 102, which can prevent the storage part 20 from detaching from the support part 10 and improve the installation reliability of the storage part 20 on the support part 10. Among them, the sliding column 501 can be, but is not limited to, cylindrical, elliptical cylindrical, prismatic, etc.

[0058] In some embodiments of the present utility model, the connecting part 50 is arranged on one side of the support part 10 or the storage part 20 close to the convex part 204, so that the storage part 20 moves along the direction close to the convex part 204 to an inclined state. Since the connecting part 50 is close to the convex part 204, during the process that the storage part 20 moves along the direction close to the convex part 204 to an inclined state, under the limiting and guiding effects of the connecting part 50, the movement of the storage part 20 is more stable and reliable.

[0059] In some embodiments of the present utility model, as Figure 4 and Figure 5 shown, a rolling member 60 is provided in one of the spherical surface groove 10a and the spherical bottom 206, and the rolling member 60 contacts the other of the spherical surface groove 10a and the spherical bottom 206.

[0060] When the rolling member 60 enables the storage part 20 to rotate relative to the support part 10, the spherical surface groove 10a and the spherical bottom 206 are in rolling contact, which can make the friction force smaller when the spherical bottom 206 rotates in the spherical surface groove 10a, the movement is smoother, and it is also beneficial to reduce abnormal sounds and noises, improving the user experience.

[0061] In some embodiments of the present utility model, at least the outermost part of the rolling member 60 is an elastic member.

[0062] The rolling member 60 can be, but is not limited to, a roller or a ball, etc. The rolling member 60 can be an elastic member as a whole or the outermost ring part can be an elastic member. Among them, the elastic member can be a component made of, but not limited to, rubber.

[0063] Since at least the outermost part of the rolling member 60 is an elastic member and can elastically deform, when the rolling member 60 abuts against the spherical surface groove 10a or the spherical bottom 206, the rolling member 60 elastically deforms. At this time, the rolling member 60 can keep the storage part 20 locked relative to the support part 10 when receiving a small acting force, thereby fixing the storage part 20 at the desired inclined angle. When it is necessary to adjust the inclined angle of the storage part 20, the user only needs to apply a larger acting force to the storage part 20 to overcome the friction force formed by the deformation of the rolling member 60 and push the storage part 20 to continue rotating.

[0064] Therefore, by setting the rolling member 60 such that at least the outermost part thereof is an elastic member, the storage portion 20 can be locked relative to the support portion 10. This locking method has a simple structure and is relatively convenient to operate and use.

[0065] In some embodiments of the present invention, the protruding portion 204 is disposed in contact with the cover plate 30. In this way, when the cover plate 30 covers the open end 202, the gap between the protruding portion 204 and the cover plate 30 can be prevented, so that the particulate matter in the storage space 201 can be effectively prevented from entering the blocking portion 203 from between the protruding portion 204 and the cover plate 30.

[0066] In the description of this specification, the descriptions with reference to terms such as "some embodiments", "optionally", "further", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0067] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A storage container, characterized in that: include: Supporting part; The storage portion is configured to be movable to an inclined state relative to the support portion, the storage portion has a storage space and an opening communicating with the storage space, the inner wall of the storage space is provided with a blocking portion close to the opening, and the edge of the blocking portion is provided with a protruding portion protruding toward a side close to the opening; A cover plate is arranged to cover the opening.

2. The storage container according to claim 1, characterized in that: The protrusion includes a main body portion and edge portions arranged at two ends of the main body portion, and in a direction away from the main body portion, the edge portions smoothly transition to be flush with the blocking portion.

3. The storage container according to claim 1, characterized in that: The blocking portion and the protruding portion are an integrally formed part.

4. The storage container according to claim 1, characterized in that: The protrusion is made of elastic material.

5. The storage container according to claim 1, characterized in that: The inner wall of the storage space is provided with a retaining edge portion close to the opening, the retaining edge portion extends along the edge of the opening and is connected to both ends of the blocking portion, and the edge of the retaining edge portion is provided with a protruding portion protruding close to one side of the opening.

6. The storage container according to any one of claims 1 to 5, characterized in that: A curved slide rail is provided between the support portion and the storage portion, and the storage portion moves along the curved slide rail to allow the storage portion to rotate relative to the support portion, so that the storage portion is in a vertical state or the inclined state.

7. The storage container according to claim 6, characterized in that: The supporting portion is provided with a spherical groove, the receiving portion has a spherical bottom, the spherical bottom is arranged in the spherical groove, the curved slide rail is arranged in one of the spherical groove and the spherical bottom, the other of the spherical groove and the spherical bottom is provided with a connecting portion, and the connecting portion is slidably arranged in the curved slide rail so that the receiving portion can move relative to the supporting portion to the inclined state.

8. The storage container according to claim 7, characterized in that: The connecting portion is arranged on a side of the supporting portion or the receiving portion close to the protruding portion, so that the receiving portion moves to the inclined state along a direction close to the protruding portion.

9. The storage container according to claim 7, characterized in that: A rolling element is provided in one of the spherical groove and the spherical bottom, and the rolling element contacts the other of the spherical groove and the spherical bottom.

10. The storage container according to claim 9, characterized in that: At least the outermost portion of the rolling element is an elastic element.

11. The storage container according to any one of claims 1 to 5 and 7 to 10, characterized in that: The raised portion is arranged in close contact with the cover plate.

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